Locomotive.



G. M. EATON.

LOCOMOTIVE.

APPLICATION FILED IMY 1!. m4.

Patented Oct. 2, 1917.

E N R 0 A durable UNITED STATESPATENT GEORGE M. EATON, OF PITTSBURGH,PENN$YLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC AND MANUFACTURINGCOMPANY, A CORPORATION OF PENNSYLVANIA.

LOCOMOTIVE.

Specification of Letters Patent.

Patented Oct. 2, 1917.

Application filed May 11, 1914. Serial-No. 837,745,

To a whom it may concern:

lie it known that I, Gnoncn M. EATON, a

citizen of the United States, and a resident of Pittsburgh, in thecounty of Allegheny and State of Pennsylvania, have invented a new anduseful Improvement in Locomotives, of which the following is aspecification.

My invention relates to electrically propelled vehicles, and it hasspecial reference to electric railway locomotives.

The object of my invention is to provide an electric locomotive of thearticulated type which shall be simple, strong and in construction,powerful and smooth-running in operation, and so constructed that it maybe readily overhauled for repairs and reassembled with facility.

According to my invention, I provide a set of geared twin motors foreach driving truck which are spring-supported between the driving axlesand are mechanically connected to the driving wheels through acountershaft and side rods. By reason of the size and location of thedriving motors, with respect to the side frames of the truck, it isimpossible to provide a pivotal driving connection between the trucksand the 1000- motive body in the customary manner and, I, therefore,provide means associated with the side frames and disposed between themotors and materially above them for effecting the pivotal connection. 7

Moreover, I provide partially cylindrical motor-supporting frames whichtransversely between the side frames and are provided with endprojections that are seated in suitable recesses in the inner sides ofthe respective side frames. When the motor supporting frames are rigidlysecured to the side frames by bolts or other suitable means, the motorframes constitute permanent cross-ties of the truck frame and provide aparticularly strong and rugged structure.

The driving motors differ in certain respects from the usual type ofmotor in that each motor embodies but a single substantiallysemi-cylindrical supporting frame into which. a separable magnetizablecore is seated and clamped in position, while the motor armature issupported in bearing housings, which are detachab-ly secured toextendthe locomotive side frames in concentric-nelation to the motorframe and magnetic able core. The magnetizable core member is entirelyuncovered, and the end portions. of the armature are protected bysuitable casings, preferably of sheet material.

My invention may best be understood by reference to the accompanyingdrawing, in which Figure 1. is a view, in side elevation, of a portionof a locomotive constructed in accordance with my invention, certainparts being removed for the sake of clearness; Fig. 2 is a plan view ofa portion of a locomotive shown in Fig. 1; Fig. 3 is a View, partiallyin section and partially in end elevation, of one of the driving motors,the section being taken along the line III-III of Fig. 1; Fig. 4 is aview, partially in section and partially in elevation, of the pivotaldriving. connection between the locomotive body and one of the drivingtrucks, the section bein taken along the line IV IV of Fig. 1; Figs. 5and 6 are, respectively, a view in side elevation and a plan view of theset of driving motors shown in Fig. 1, and Fig. 7 is an enlarged detailview of the means for clamping the magnetizable core members of themotors in position.

Referring to the drawing, the structure shown comprises a locomotivebody 1, and a plurality of articulated driving trucks 2 and 3 associatedtherewith, each of which is provided with a plurality of driving motors4 and 5 which are carried by the side frames 6 and are mechanicallyconnected to driving wheels 7 through the agency of pinions 8, gearwheels 9 andrside rods 10.

The locomotive body 1, in general, may be of any suitable constructionand embodies a central raised floor portion 12 of trussed structure inorder toaccommodate the driving motors anda suitable center-pinstructure. Any suitable construction may be employed for providing theraised floor portion ofthe cab body, but I find it preferable to employelevated longitudinal beams 13 which are disposed within the main floorlongitudinal beams 14 and are rigidly supported by means of inclinedtrusses 15 and cross ties 16 and 17. The cross-tie 16 exten dstransversely between the main floor longitudinal beams 14, while thecross-tie 17 extends between the elevated beams 13. Be-

tween these ties 16 and 17, and in the central plane of the locomotive,is a centering block 18 which carries a suitable center pin 19 that isassociated with the driving truck in such manner as to provide a pivotaldriving connection between the truck and the locomotive body, as will behereinafter set forth. As shown, the center pin 19 serves merely as apivot and driving connection and takes no weight of the cab body, whichweight is transmitted to the driving trucks through suitablespring-loaded friction plates 20, in a well-known manner, although I donot wish to be restricted in this respect.

Each driving truck embodies a plurality of side frames 6 which areprovided, as is customary, with journal boxes 26 in which the drivingaxles 27 are disposed. The locomotive side frames 6, moreover, aresupported on the journal boxes 26 by means of equalizer springs andlinkage mechanisms 28. Each side frame 6 is provided, between thedriving wheels 7, with a plurality of substantially semi-circularrecesses 30 in the upper edge thereof, and with concentric substantiallysemi-circular recesses 31 in the inner side thereof. The recesses 30 and31 of the respective frames are correspondingly disposed and therecesses 30 serve to support bearing housings 32, while the recesses 31serve as seats to receive the ends of the motor frames, as will behereinafter described.

Each of the driving motors comprises a supporting frame 35, a separablemagnetizable core 36, an armature 37, a plurality of bearing housings32, and a plurality of inclosing casings 57. The supporting member orframe 35 is substantially semi-cylindrical in form and is provided withend projections 39 which are also semicylindrical and a adapted to beseated within the recesses 1 in the respective side frames 6 and arebolted or otherwise secured thereto. The middle portion of thesupporting frame 35 is counter-bored to provide a semi-cylindrical seat35 in which the cylindrical magnetizable core 36 rests, said corepreferably comprising a plurality of laminations which are disposedside-byside and are intimately fastened together between end plates 40.

The supportin frame 35 is provided with an outward y projecting side lugor bracket 41 which is flush with its upper surface and with which aclamping member 43 cooperates. The member 43 is of substantially thelength of the core 36 and is provided with downwardly projecting lugs 44at each of its sides. One side lug 4A of the member 43 rests upon thebracket 41, while the other side lug is disposed within a. longitudinalslot 47 that is provided in the magnetizable core member 36at aheightcorresponding substantially to the upper surface of the bracket 41. Aplurality of clamping bolts 48 project through the bracket 41 andclamping member 43 intermediate its sides, and, thus serve to hold thecore member 36 rigidly in position.

Inasmuch as the motors 4 and 5 are assembled in side-by-side relation,the adjacent sides of the respective supporting frames 35 are providedwith a plurality of relatively narrow brackets 50 instead of a singlebracket of the substantial length of the core member 36, and thesebrackets 50 are so disposed as to interlock with each other, as shownclearly in Fig. 6. The adjacent portions of the magnetizable cores 36 ofthe motors 4 and 5 are recessed and provided with substantially parallelfaces 52 which are spaced sufliciently to permit the positioning of aclamping member 53 which is similar in construction to the member 43,already described. This intermediate clamping member 53 co6perates withledges 54 on the respective cores 36, and serves to clamp down saidcores, through the agency of bolts 55.

Care should be exercised to secure a concentric relation between thecylindrical bearing surfaces of the projecting members 39 of thesupporting frames 35 and the intermediate cylindrical seats 35 in whichthe cores are placed. If this relationship is secured, and also aconcentric relation of the recesses 30 and 31 of the side frames, it isclear that the motors, when assembled in position, will have the desiredconcentricity of armature and field magnet core. The armatures 37 areprovided with shafts 56 that are carried by the bearing housings 32which are disposed in the side frame recesses 30 and are secured bybolts to said side frames 6.

It should be noted that no upper frame members are provided for thedriving motors 4: and 5, as is customary, and that the magnetizablecores 36 are uncovered and exposed. The ends of the motors are coveredby detachable casings 57 of sheet material which are suitably secured tothe end plates 40 of the cores 36.

Both ends of the armature shafts 56 are provided with pinions 8 whichmesh with the gears 9 that are carried by a countershaft 58. Thecountershaft 58 is located midway between the driving axles 27 andsubstantially on a level therewith, and is disposed within a pedestalopening 59 in which suitable bearing blocks 60 are positioned. Therespective ends of the countershaft 58 are provided with cranks 62 whichhave connections with side rods 10 for the purpose of transmittin thedriving effort of the motors to the drlving wheels 7.

A plurality of upwardly projecting members 65 are preferably integrallyassociated with the respective side frames 6 directly nausea to a heightsubstantially above the motors 4 and 5 and are rigidly connected by acrosstie 67, the ends of which are provided with openings into which theupper ends of the members project and are fitted. The cross-tie 67 isheld in place rigidly by means of suitable, removable keys 68 whichcooperate with said cross-tie and with the upper ends of the projectingmembers 65. The cross-tie 67 is preferabl permanently pivotallyassociated with the center pin 19.

When it is desired tooverhaul'one of the motors, the keys 68 arewithdrawn, after which the locomotive body 1 may be raised, by means ofa crane or other suitable apparatus, whereby the cross-tie 67 isdetached from the projecting members 65 of the side frames 6. Thedriving truck may then be run out from under the locomotive body and themotors overhauled from above, after having first lowered thecountershaft 58 and Z associated genre 9. It is, of'course, notessential that the crosstie 6-? be detachable from the members 65 andpermanently associated with the center pin 19. If desired, thecross-tie67 may be integral withthe Side frames 6 or permanently secured thereto,and separable from the centerpinlt), in which case, greater difficultyis encountered in overhauling the motors, inasmuch as it would then beimpossible .to raise the motors directly from.

theirsents, and would necessitate an angular overhauling thereof.

It will, of course, be understood that, in the center-pin structurewhich is employed for the other driving truck, provision must be madefor a slight longitudinal movement as is common practice withlocomotives o the articulated type. In'order to secure this relativemovement, the openings inthe ends o= the cross+tie 67 are made slightlylonger thanthe"longitudinal dimension of the up wardly projectingmembers 65, although;

other suitable means may be employed.

By reason of the arrangement and location of'parts described, a.particularly powerful locomotive is Secured which is provided withrelatively large driving motors that are rigidly carried by the sideframes,

the latter being spring-supported upon the driiging axles. Furthermore,the motors are; located-within the rigid wheel base, and the number ofdriving gears is reduced to ai minimnnnwhile the elevated cross-tie andcenter-pin structure provides ample space fordriving motors of acapacity which could notiotherwise be employed.

Qbvio'usly, I do not wish to be restricted to the specific structuraldetails and relation: shipl of pants shown and described, as iti'isevident that the benefits of my invention may be secured by otherstructures differing to a greater or lessextont, but embodying theprinciples-of my invention. 1, therefore, desire that only suchlimitations shall be imposed as are indicated in the appended claims.

I claim as my invention:

1. In a vehicle, the combination with sideframes having correspondinglydisposed upwardly projectingmembers associated therewith, and aremovable cross-tie joiningvthe upper ends of said members, of acentering device associated with said cross-tiei 2. In a vehicle,thecombinatio l with side frames having correspondinglydisposed-upwardly projectingmembers associated therewith, and removablemeans for joining said upwardly projecting members, ofcentering meansassociated with said joining means.

3. In a vehicle, the combination with side frames having correspondinglydisposed upwardly projecting members associated therewith, and a crossmember removably securedto the upper ends ofsaid upwardly projectsingim'embers, of a centerspincarrfied bysaid cross member. 7

i. In a vehicle, the combination with side frames having correspondinglydisposedup wardly projecting members associated therewith, and across'member cooperatively engaging the upper ends of said upwardlyprojecting members, of a center-pin associated with said cross member,and detachable means for securing saidcross member to saidprojectingsmembe'rs. r

5. In-a vehicleg this combination with side: frames havingcorrespondingly disposed up.- wardly projecting members associatedtherewith and a cross-member having iend openings to receive the upperends of said upwardly projecting members, of locking means for securingsaid cross member to said upwardly projecting members and a centeringdevice associated with said cross member. i V j 6. In a vehiclehavingtwo pairs of driv. 1 ing, wheels, the combination with a body, 7 a1 running-gearihaving side frames, and a plurality'oi' motors carried bySBJl(l':SldE frames and disposed between the pairs ofdrivin'g wheels, ofmeans associatedavith said side frames and disposed between and'belowthe upper portions of said motors for 'pivotally connecting said runninggear to said body.

I. In aivehicle having two pairs of driv ing5wheels, thecombinatien'with 8119 6-3 7 a running-gear haying-side:tramesga-nd aplurality of motors ci 'i iied,hysaid side frames and disposed betweenthe pairs- "ofdriving wheels, of across member disposcd between andbelow the upper portions of said motors andvsecured tosaid side frames,a pi-votal driving connection cotiperating with said body and said crossmember. g

8. In a vehicle having two pairs of driving wheels, the combination witha body, a running-gear having side frames, and a plurality of motorscarried by said side frames and disposed between the pairs of drivingwheels, of upwardly projecting members associated with said side framesand disposed between said motors, a cross-member secured to the upperends of said projecting members and disposed below the upper portions ofsaid motors, and means coiiperating with said cross-member forassociating said body with said running gear.

5). In a vehicle the combination with a body having a raised floorportion thereof of frictional width, and a driving truck comprising sideframes, a pair'of motors carried thereby, two sets of driving wheels andmeans for mechanically connecting said motors to both sets of drivingwheels, of an elevated cross member associated with said side frames anddisposed below the upper portions of said motors, and means coiiperatingwith'said cross member and said raised floor portion of said body forproviding a pivotal driving connection between said body and said truck.

10. In a vehicle, the combination with a pluralit of side frames havingoppositely dispose recesses therein, of a motor frame set into saidrecesses and rigidly secured to said side frames.

11. In a vehicle, the combination with a plurality of side frames havingoppositely disposed recesses therein, of a combined cross-tie and motorframe fitted into said frame recesses and rigidly fastened to said sideframes.

12. In a vehicle, the'combination with a plurality of side frames havingcorrespondingly disposed recesses in the inner sides thereof, of a motorframe having end portions adapted to fit into said recesses, and meansfor rigidly securing said motor frame to said side frames.

13. In a vehicle, the combination with a plurality ofside frames havingcorrespondingly disposed recesses in'the inner sides thereof, of a motorframe having end portions adapted to fit into said recesses and boltsfor rigidly securing said motor frame between said side frames toconstitute a permanent cross-tie.

14. In a vehicle, the combination with a plurality of side frames havingcorrespond ingly disposed semicircular recesses therein, of a motorframe disposed between said side frames and having semi-cylindrical endsfitted into said recesses, and means for securing said motor frame tosaid side frames.

15. In a vehicle, the combination with a plurality of side frameshaving'correspondingly disposed recesses therein, of a motor framehaving its ends fitted into said recesses, said motor frame beinglocated entirely below the upper surface of said side frames, and meansfor rigidly securing said motor frame to said side frames.

16. In a vehicle, the combination with a plurality of side frames, of adetachable cross-tie rigidly secured between said side frames, and aremovable magnetizable motor core cylindrical in form secured directlyto said cross-tie.

17. In a vehicle, the combination with a plurality of side frames, of across-tie rigidly secured between said side frames, a stationarymagnetizable field structure carried y said cross-tie, and a rotatablearmature carried by said side frames.

18. In a vehicle, the combination with a plurality of side frames, of asubstantially semi-cylindrical cross-tie rigidly secured between saidside-frames, and a laminated magnetizable core supported by saidcrosstie.

19. In a vehicle, the combination with a plurality of side frames, of across-tie rigidly secured between said side-frames, a laminatedmagnetizable core supported by said cross-tie, a rotatable armaturecooperated with said core, and means associated with said side framesfor supporting said armature. V

20.'I11 a vehicle, the combination with a plurality of side frameshaving correspondingly disposed recesses therein, of a stationary motorframe having ends fitted into one set of said recesses and secured tosaid side frames, a motor armature, and bearing members therefor fittedinto the other set of recesses and secured to said side frames.

21. In a vehicle, the combination with a plurality of side frames havingcorrespondingly disposed concentric recesses therein, of a stationarymotor frame having semi-cylindrical end projections and a concentricintermediate upwardly concave portion, said end projections beingadapted to be seated in one set of the recesses in said side frames, a

cylindrical magnetizable core member disposed in said concave portion ofsaid motor frame, bearing housings seated in the other set of side framerecesses, and an armature mounted in said housings.

22. Ina vehicle, the combination with a plurality of side framesseverally having a semi-circular recess in its upper edge and a largerconcentric semi-circular recess in the inner side thereof, a motor framehaving semi-cylindrical ends seated in said larger side frame recesses,and means for rigidly securing said motor frame to said side frames, ofcircular bearing housing adapted to rest in the recesses in the upperedges of said side frames, means for securing said housings to said sideframes, and a rotatable motor armature mounted in said bearing housin s.r

n a vehicle, the combination with a 1 plurality of side frames havingcorrespondingly disposed semi-circular recesses in their upper edges andlarger concentric semi-circular recesses in the inner sides of saidframes, a motor f'ame having semi-cylindrical ends seated in said largerrecesses, and means for rigidly securing said motor to said side frames,of a separable magnetizable core seated in said motor frame in coaxialrelation with said concentric side frame recesses, a motor armaturewithin said core, and detachable b Haring members seated in the recessesin the upper edge of said side frames for supporting said arma ture incoaxial relation with said core.

24. In a vehicle, the combination with a plurality of side frames and ahalf-frame member rigidly secured thereto, of a separable magnetizablecore seated in said memher, and means cooperating with said core andsaid member for rigidly clamping said core in position.

25. In a vehicle, the combination with a plurality of side frames and amember rigidly secured thereto, of a separable magneti-zable core seatedin said member, and means cooperating with said core and the uppersurface of said member for clamping said core rigidly in position.

26. In a vehicle, the combination with a body having a center-pinassociated therewith, of a truck embodying side frames, a detachablecross member secured to said frames, and means for locking said crossmember against vertical movement relative to said frames, said crossmember being per manently associated with said center pin.

27. In a vehicle, the combination with a body, a bar, and a center-pinpermanently pivotally associated with said bar and said body, of a truckembodying side frames, means for locking said bar against verticalCopies of this patent may be obtained for five cents each, by addressingthe movement relative to said frames, and means for dctachahlv securingsaid bar to said side frames. a

In a vehicle, the combination with a body, a plurality of articulateddriving trucks each en'zbodying side frames, aplurality of pairs ofdriving Wheels and a plurality of mechanically connected motors mountedthereon and. disposed between the pairs of driving wheels, of meansassociated with the side framcs of each truck and disposed below theupper portions of said motor for pivotally connecting said trucks tosaid body, one of said trucks having relative longitudinal movement withrespect to said body.

2!). The combination with a plurality of side-by-side half-frame membershaving seats therein, and magnetizable cores disposed in said seats, ofa single member c0- operating in common with said cores for rigidlypositioning said cores in said frame members.

30. The combination with a twin halfframe structure having a pair ofseats therein, and magnetizable cores disposed in said seats, of meanscooperating in common with said cores for rigidly positioning saidcores.

31. The combination with a half-frame member having a seat therein and aremovable magnetizable core disposed therein and secured thereto, of acasing cooperating with said core and said frame member for lnclosingone end of said frame.

In testimony whereof, I have hereunto subscribed my name this 29th dayof April, 1914.

GEORGE M. EATON.

Witnesses:

G. R. IRWIN, B. B. HINES.

Commissioner of Patents,

